TITLE

Demonstration of all-optical modulation in a vertical guided-wave nonlinear coupler

AUTHOR(S)
Berger, Paul R.; Chen, Yi; Bhattacharya, Pallab; Pamulapati, Jagadeesh; Vezzoli, G. C.
PUB. DATE
April 1988
SOURCE
Applied Physics Letters;4/4/1988, Vol. 52 Issue 14, p1125
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The performance characteristics of an AlGaAs dual waveguide vertical coupler with a nonlinear GaAs/AlGaAs multiquantum well coupling medium are demonstrated. The structure was grown by molecular beam epitaxy and fabricated by optical lithography and ion milling. The nonlinear coupling and modulation behavior is identical to that predicted theoretically. The nonlinear index of refraction and critical input power are estimated to be n2=1.67×10-5 cm2/W and Pc=170 W/cm2, respectively. This device also allows reliable measurement of the nonlinear refractive index for varying quantum well and optical excitation parameters.
ACCESSION #
9826443

 

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